All releases of rpm2html

Release Notes: The option 'dump_html_only_if_rpm_newer' has been added so that users can enable the comparison of file modification timestamps of the RPM file and dumped HTML file. When enabled, the HTML file is dumped for the RPM file only if the HTML file does not exist yet or its timestamp is older than that of the RPM file (by default, this is disabled to maintain the same behaviuor as previous releases).